MCQOPTIONS
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| 1. |
What is the requirement of the good commutation? |
| A. | Brushes should be of proper grade, size and material |
| B. | Brushes should smoothly run in the holders |
| C. | Smooth, concentric commutator properly undercut |
| D. | Brushes should be of proper grade, size, material, run smoothly in the holders and concentric commutator properly undercut |
| Answer» E. | |